Oilpan4
Posts: 1838
Joined: Wed Jan 09, 2019 10:51 pm
Delivery Date: 10 May 2018
Leaf Number: 004270

Re: Level 1 solar charging w/o batteries?

Sat Oct 19, 2019 11:21 am

PrairieLEAF wrote:
Thu Oct 17, 2019 8:35 pm
Oilpan4 wrote:
Thu Oct 17, 2019 7:10 am
Those inverters are garbage. Do not buy anything like that.
Thanks. The more YouTube videos I watch about them, the less I want one.

I think I will abandon solar for now. I learned that our utility has 30 MW of nearby solar farms and over 3,000 rooftop connections. Me messing with a few panels probably isn't worth it.
Get your self some roof top panels with a sunnyboy secure power supply grid tie inverter. That way you can have 120v 60hz AC power when the power goes out as long as the sun is out.
Best of all it doesn't use batteries.
Just don't get ripped off.
"THE ABOVE POST CONTAINS MISLEADING AND INACCURATE INFORMATION. PLEASE CONSIDER IT OPINION, NOT FACT". -someone who I offended and is unable to produce the facts in question.

DominicF
Posts: 5
Joined: Tue Nov 05, 2019 9:24 am
Delivery Date: 05 Nov 2019

Re: Level 1 solar charging w/o batteries?

Tue Nov 05, 2019 9:28 am

I think it's possible. I have level 1 too. By the way, I found some interesting and useful review about solar cars https://websolarguide.com/how-much-do-solar-cars-cost/

PrairieLEAF
Posts: 200
Joined: Tue Sep 10, 2019 8:58 am
Delivery Date: 04 Feb 2019
Location: Weld County, Colorado

Re: Level 1 solar charging w/o batteries?

Fri Nov 15, 2019 10:22 am

I might give it another try next year.
2016 LEAF S-30 w/QC "Lexie"

Precise1
Gold Member
Posts: 8
Joined: Mon Feb 08, 2021 10:23 pm
Delivery Date: 09 Feb 2021

Re: Level 1 solar charging w/o batteries?

Fri Mar 05, 2021 7:04 pm

I dabble with off grid solar, work for an EV company, and own a Leaf, so here is what I know:

The lowest rate my evcs (charging thingie) works at is 110v/8 amps; that's 880 watts. I currently have a 400w solar array with a 5kw/hr lead acid battery bank and a 900w true sine power inverter. I did a test run on a bright day to see if it could charge a 2015 Leaf. Yes, but it was pushing it to the max!
I am currently upgrading the system to 600w solar array, 6.5kw/hr lifepo4 battery bank and a 1500w true sine power inverter. This would be able to reasonably charge the Leaf in sunny conditions, but not in one day, and I would definitely monitor the battery condition (L1 takes 20ish hours for a full charge). Still, in an emergency this is far better than nothing, and this system wasn't intended for this purpose, it is my emergency power for the house.

What I would recommend is at least 1000w solar system, 1200 preffrable due to losses (1500 w perfect), and a basic deep cycle battery (100 ahr minimum) as a buffer/reserve that you can use for other purposes. Your true sine power inverter should be no less than 1000w, 1200 would be better.
That system would do the trick, and be good to have regardless.

Is there a reason you want a direct batteryless charging system other than cost, because I don't think that would be a good idea.

LeftieBiker
Moderator
Posts: 16966
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Level 1 solar charging w/o batteries?

Fri Mar 05, 2021 7:26 pm

Having a battery buffer is indeed better.

A couple of corrections to the above post: the charging cable is an "EVSE," and US line voltage is 120 volts these days, which changes the watt calculation.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

Precise1
Gold Member
Posts: 8
Joined: Mon Feb 08, 2021 10:23 pm
Delivery Date: 09 Feb 2021

Re: Level 1 solar charging w/o batteries?

Fri Mar 05, 2021 10:45 pm

Yes, I can never remember that acronym so I don't try too hard. Maybe that's why? :D

A few points about the voltage though. Yes, line voltage is 120, but...
I was talking about the minimum that my EVSE works at
I'm talking about running off of a power inverter, none of mine ever seem to hit 120 volts
I'll bet you don't have 120 volts at the plug regardless

My experiment with my solar system and EVSE (which has a meter on it) and what my killawatt and clamp meters all roughly agreed on was something around 117v and 7.9a so 925w, a 5% difference and part of the reason I recommended roughly 50% more capacity than mine.
A DC system, too many variables and potential losses... you always need to over spec, but then the cost... :roll:

LeftieBiker
Moderator
Posts: 16966
Joined: Wed May 22, 2013 3:17 am
Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Level 1 solar charging w/o batteries?

Fri Mar 05, 2021 10:52 pm

Yeah, we looked into solar here, but the slate roof and relatively narrow South yard prohibited it. We do have one big solar thermal panel, and I wish we'd gotten two of them side by side. Our hydro plant is 3/4 of a mile from us, at least.
Brilliant Silver 2021 Leaf SV40 W/ Pro Pilot & Protection
2009 Vectrix VX-1 W/18 Leaf modules, & 2 lithium E-bicycles.
BAFX OBDII Dongle
PLEASE don't PM me with Leaf questions. Just post in the topic that seems most appropriate.

PrairieLEAF
Posts: 200
Joined: Tue Sep 10, 2019 8:58 am
Delivery Date: 04 Feb 2019
Location: Weld County, Colorado

Re: Level 1 solar charging w/o batteries?

Sat Mar 06, 2021 10:23 am

Precise1 wrote:
Fri Mar 05, 2021 7:04 pm
I dabble with off grid solar, work for an EV company, and own a Leaf, so here is what I know:

The lowest rate my evcs (charging thingie) works at is 110v/8 amps; that's 880 watts. I currently have a 400w solar array with a 5kw/hr lead acid battery bank and a 900w true sine power inverter. I did a test run on a bright day to see if it could charge a 2015 Leaf. Yes, but it was pushing it to the max!
I am currently upgrading the system to 600w solar array, 6.5kw/hr lifepo4 battery bank and a 1500w true sine power inverter. This would be able to reasonably charge the Leaf in sunny conditions, but not in one day, and I would definitely monitor the battery condition (L1 takes 20ish hours for a full charge). Still, in an emergency this is far better than nothing, and this system wasn't intended for this purpose, it is my emergency power for the house.

What I would recommend is at least 1000w solar system, 1200 preffrable due to losses (1500 w perfect), and a basic deep cycle battery (100 ahr minimum) as a buffer/reserve that you can use for other purposes. Your true sine power inverter should be no less than 1000w, 1200 would be better.
That system would do the trick, and be good to have regardless.

Is there a reason you want a direct batteryless charging system other than cost, because I don't think that would be a good idea.
Thanks for your findings!

Minimalism was a motivator for not wanting to include battery storage. My recent interest has shifted to building a micro camping trailer with enough unfolding solar power to be able to L1 charge the EV tow rig when camping. This would include battery storage (which would also supply the camping electrical demand) but would probably be at least several years out (if ever).
2016 LEAF S-30 w/QC "Lexie"

salyavin
Posts: 323
Joined: Thu Sep 26, 2019 9:51 pm
Delivery Date: 30 Dec 2019
Leaf Number: 318726
Location: Littleton , CO

Re: Level 1 solar charging w/o batteries?

Sat Mar 06, 2021 3:44 pm

Did you see this story? Claims of a portable solar charging for a car so stationary should be even easier.

https://www.globaltrends.us/2021/03/man ... e-his.html

salyavin
Posts: 323
Joined: Thu Sep 26, 2019 9:51 pm
Delivery Date: 30 Dec 2019
Leaf Number: 318726
Location: Littleton , CO

Re: Level 1 solar charging w/o batteries?

Sat Mar 06, 2021 4:06 pm

LeftieBiker wrote:
Fri Mar 05, 2021 10:52 pm
Yeah, we looked into solar here, but the slate roof and relatively narrow South yard prohibited it. We do have one big solar thermal panel, and I wish we'd gotten two of them side by side. Our hydro plant is 3/4 of a mile from us, at least.
Glad to see you have on hydro power. If your roof does not allow solar out here we have community solar you can buy into. Our most "famous" eco car mechanic in colorado lives in an apartment and buys into a solar farm to get equivalent power, not sure if New York has a similar option. Basically a bunch of panels out in a fiend somewhere.

PrarieLEAF being that he is looking at not being grid tied could build a huge farm but not much point unless you get batteries to store it, I almost want to introduce him to a guy in southern wyoming who has windmills and solar and the largest tesla wall installation in Wyoming (not the country just Wyoming) he as you can imagine is rural east of Cheyenne. When you have land like that you can do impressive things.

I am grid tied with Xcel so I am limited to 120% production based on my usage over year at design time. Less than two miles from my house power companies change and they are less solar friendly, have demand charges all kinds of fun so my solar EV driving friends charge at l1 and and putting in home batteries.

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